As the climate warms, the Arctic greens—and vice versa.
Earlier Arctic plant growth is too early for migrating caribou.
Constant vigilance rewards hobbyist astronomers.
Stem cell mini-brains reveal how brain regions organize.
Dung beetles reduce harmful methane emissions in cow feces.
Rare star at our galaxy’s heart shares a black hole’s secrets.
Geologists study earthquake risk in a crowded country.
New intravenous vaccine prevents malaria in first tests.
Biodiversity boom in Madagascar ended long ago.
Observations of a star’s magnetic field reveal unusual behavior.